2 Answers
2

Gourds generally have a longer vine and smaller leaves than the related squashes, Curcurbita maxima, pumpkin and hubbard squash, Curcurbita moschata, butternut squash and neck pumpkin, and Curcurbita pepo, marrows and summer squash. But most cultivated gourds are in the same genus, so the identification of a volunteer like this has to be an educated guess. From the splotches on the leaves, and their appearance in general, I would say probably c. pepo.

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